高压物理学报2012，Vol.26Issue(4)：426-432,7.
铝粉-空气混合物爆燃转爆轰过程及爆轰波结构
Deflagration to Detonation Transition and Detonation Wave Structure of Aluminum-Air Mixture
摘要
Abstract
Motivated by the current interest in the mechanism of the deflagration to detonation transition（DDT）,the DDT process and detonation wave structure of aluminum-air mixture are investigated experimentally by a large scale tube with length of 32.4 m and inner diameter of 0.199 m.The overall DDT process can be divided into slow reaction compression stage,pressure wave speed-up and shock wave formation stage,transfer from shock reaction to critical shock reaction,transfer from critical shock to overdriven detonation,and detonation stage.The optimal concentrations of mixtures in this experimental tube are obtained,and the critical concentration of DDT is also studied.Eight pressure gauges are well-distributed at each periphery of four certain sections in the 1.4 m long detonation testing tube for detonation wave testing.According to the test results,the detonation wave structure of aluminum-air mixture is analyzed,which shows single head mode.关键词
燃烧转爆轰/弱点火/铝粉/自持/爆轰波Key words
deflagration to detonation transition/weak ignition/aluminum/self-sustained/detonation wave分类
数理科学引用本文复制引用
陈默,白春华,刘庆明..铝粉-空气混合物爆燃转爆轰过程及爆轰波结构[J].高压物理学报,2012,26(4):426-432,7.基金项目
国家自然科学基金 （）
爆炸科学与技术国家重点实验室自主课题 （）
